Node Jimp | scale
Introduction : The scale() function is an inbuilt function in Nodejs | Jimp which uniformly scales the image by a factor.
Syntax:
scale(scale, mode, cb)
Parameter:
- scale – This parameter stores the scaling factor of the image.
- mode – This is optional parameter which stores the scaling method.
- cb – This is optional parameter which is invoked when compilation is complete.
Input Images:
Setup Environment :
npm init -y
Install Dependencies :
npm install jimp
Example 1:
javascript
// npm install --save jimp// import jimp library to the environmentvar Jimp = require('jimp');// User-Defined Function to read the imagesasync function main() { const image = await Jimp.read('// scale Function having scaling factor as 0.2 image.scale(.2) .write('scale1.png');}main(); console.log('Image Processing Completed'); |
Output:
Example 2: With mode and cb (optional parameters)
javascript
// npm install --save jimp// import jimp library to the environmentvar Jimp = require('jimp');// User-Defined Function to read the imagesasync function main() { const image = await Jimp.read('// scale Function having scaling-factor, mode and callback function image.scale(3, Jimp.RESIZE_BEZIER, function(err){ if (err) throw err; }) .write('scale2.png');}main(); console.log('Image Processing Completed'); |
Output:
Reference: https://www.npmjs.com/package/jimp
